Door mechanism for creosoting-tanks.



S. M. ROWE. D003 MEGHANISM PoR oBBosoTING TANKS.

APPLICATION FILED MAY 23, 1907.

Patented Dec. 29, 1908.

W1 in asses 9; A tfamey.

SAMUEL M. ROWE, OF CHICAGO, ILLINOIS.

DOOR MECHANISM FOR CREOSOTING-TANKS.

Specification of Letters Patent.

Patented Dec. 29, 1908.

Application led May 23, 1907. Serial No. 375,302.

To @Z whom 'it may concern:

Be it known that I, SAMUEL M. RowE, a resident of Chicago, county of Cook, and State of Illinois, have invented certain new and useful Improvements in Door Mechanisms for Creosoting and Analogous Retorts, of which the following is a specification.

This invention relates to improvements in door mechanisms for creosoting and analogous retorts and has for its salient objects to provide a structure in which all the parts under stress may contribute their maximum strength in confining the door in position. In structures of this character the door of the retort is subject to very high pressure from within and heretofore difliculty has been experienced in so constructing and arranging the parts of the structure as not to weaken any other part.

In the construction shown in the drawings, which in its general form is of a well known commercial type, the door is held closed by means of a plurality of confining levers abutting against a confining ring secured to the outside of the retort proper at the end thereof. Heretofore it has been the practice to so construct the door hinge that the supporting lugs thereof have passed through the confining ring or trimmer upon the end of the retort, which construction obviously weakened the latter. Inasmuch as this ring takes the whole pressure exerted upon the door, it has been deemed necessary heretofore to make it extremely heavy, its confining strength being due, when thus notched, chiefly or entirely to its rigidity against bending stresses.

The object of the present invention is to so construct the supporting lugs and door hinge that they will extend around and not through the confining ring thereby securing the full tensile strength of the confining ring. The manner of doing this will be readily understood from the following description, reference being had to the accompanying drawings, in which- Figure 1 is a vertical sectional View of the device showing the door closed within the retort. Fig. 2 is a bottom plan view of the door with the confining head and spindle removed. Fig. 3 is a detailed view of that part of the hinge which is cast with the door. Fig. 4 is a sectional detail showing the manner of arranging the supporting lug.

Referring to the drawings 1 designates the end of a creosoting retort provided with an inwardly extending door 2 which is concave in cross section and is provided with a series of radial strengthening anges 3 3 in a well understood manner, in order to secure maximum strength. In order to confine this door within the retort it is provided with a confining head hereinafter described, which engages the confining ring 4. This ring is riveted by a series of rivets 6 to the end of the retort shell and extends outwardly therefrom some distance and terminates in an inwardly extending flange 7. This confining ring is usually made as a casting fitting over the end of the retort, as shown clearly in Fig. 1.

Describing now the manner of confining the door within the ring, the former is centrally apertured at 8 for the reception of a spindle member 9 which is externally screwthreaded as shown clearly in Fig. 1. Upon the lower end of the spindle member is screwed a locking member 10 which is adapted to travel upon the spindle member 9. Upon the shoulder 11 of the member 10 is seated a non-rotatable toggle plate 12 and between the plate and member 10 are inserted a plurality of anti-friction ball-bearings 13 which permit the member 10 to easily move independently of the toggle plate 12. In order that the toggle plate may be readily assembled upon the member 10 and also be confined against axial movement, I provide a confining ring 14 which is fixedly secured to the member 10 after the toggle plate is in position. Inside the toggle plate 12 and flush with the outer circumference of the confining ring 14 is seated an abutting ring 18- which is secured to the plate 12 by means of suitable through bolts 13. Near the outer periphery of the toggle plate 12, are fastened a plurality of U shaped toggle bolts 16 in which are pivotally mounted toggle levers 21 by means of pins 17 inserted through the bolts. The inner end of each of these toggle levers is adapted to engage the abutting'member 18 and their outer ends are adapted to engage the supporting ange 7 of the confining ring 4 when the door is closed. Upon the outer periphery of the door is provided a cage ring 2O having guide openings 21 through which the outer ends of the toggle levers pass and are confined against lateral movement. In order to more securely hold the U shaped bolts against the abutting ring I provide a spring pressed ring 22 which is seated in recesses formed in the U-bolts, as shown clearly in Fig. 1. The member l0 is socketed 'to receive a plurality of handles 24 and preferably a plate 23 is provided to which said handles are secured. From the foregoing it will be seen that the member 10 and parts united therewith is adapted to travel upon the screw-threaded spindle 9, carrying with it the toggle plate Which, however, does not rotate. The aXial movement of these parts moves the toggle levers into orv out of locking engagement with the ange 7.

Describing now the manner of supporting the door structure, 25 designates as a whole a hinge, comprising a pair of arms 26 cast with the door structure and another pair 27 cast with the confining ring 4. These arms are pivotally connected with each other at 2S by means of pintles 29, as seen clearly in Fig. 2. The arms 2G are curved outwardly and extend around the supporting flange 7 off the .ring 4. To secure further strength,

the arms 26 are .connected by a web 30while To this end I provide aU .shaped supporting lug-.32 which iscast with or secured to the outer periphery of the door at its -upper edge and extends around and. outside ofthe prof jecting part'of the confining ring 4. The

f if free end of this conninglug -is centrally forked for the receptionof a supporting linkA 33 Whichis securedto the-lugbymeans-of a throughpin 34 as shown clearly in Fig.4. It'. will be noted that .this supporting lugisl `1 also so constructed and arranged that it doesl not pass through'the confining ring. f.

VIclaimas my invention: c i@ Il fIn a ycreosotingoi1 analogous retort, the.`

combination witha door structure, ofa cirl f cumferentiallyv unmutilated confining lring ring being provided with an in-turned fiange'i portion, radially shiftable toggle levers upon said door structure cooperating Vwith said in-turned flange portion to hold "the door in closed position, means for operating said toggle levers, and a hinge strueturecomprising a pair of arms secured to said'ri1 igl a web member connecting said. arms, a second' pair of arms securedto said door structure@ andl provided with a similar connectingweb,. said latter pair of arms being.outwfa'rdlyl` movedaround the edge ofsaidfconfiningring land 4pivotally secured tofsaidfirst p of arms.` f H .gqzz' 3. In a retort, the combination with ia door structure, of a circumferentiallyfeontinuous and .unmutilated confining ring 'providedwith anin -turned flange' portion, radially`v shiftabletoggle levers secured to said'door structure .and cooperating .with `sai'di'fin l` turnedflange portion .to hold: the'do'or closed position,wmeans for operating. .said' locking mechanism,.a hinge. mechanism coral.` prising an arm secured to said.confiningring;Y a second arm secured to. sa-iddoor. structurev4 and passing around .and .outsidelofssaid .con-f tending around the outside'of. said confining.;

member.. f 1

Witnesses: i Y EMILIE Rosn,i"..f .t

` FRANK L.BELKNA1 .1 

